1 Thessalonians 5:19 (KJV)
19 Quench not the Spirit.
Romans 8:9 (KJV)
9 But ye are not in the flesh, but in the Spirit, if so be that the Spirit of God dwell in you. Now if any man have not the Spirit of Christ, he is none of his.
Romans 8:16 (KJV)
16 The Spirit itself beareth witness with our spirit, that we are the children of God:
1 John 4:13 (KJV)
13 Hereby know we that we dwell in him, and he in us, because he hath given us of his Spirit.
Acts 1:8 (KJV)
8 But ye shall receive power, after that the Holy Ghost is come upon you: and ye shall be witnesses unto me both in Jerusalem, and in all Judaea, and in Samaria, and unto the uttermost part of the earth.